Jim Roush said unto the world upon 07/07/2005 12:42:
> I'm getting the following error message:
>
> AttributeError: 'tuple' object has no attribute 'seek'
>
> below is the code that produced the error. The line in question is
> marked with arrow in the left margin. Any help would be appreciated.
>
> def build_sp500_rand():
> sp500_csv = open('c:/indices/sp500.csv', 'r')
> sp500_csv_recs = sp500_csv.readlines()
> sp500_csv.close()
>
> sp_rand = ('c:/indices/sp500.rnd', 'w+b')
Here is the problem. sp_rand is a tuple of 2 strings, not a file
object. Try
sp_rand = open('c:/indices/sp500.rnd', 'w+b')
or
sp_rand = file('c:/indices/sp500.rnd', 'w+b')
> record_size = struct.calcsize('Lf')
>
> record_number = 0
> for rec in sp500_csv_recs:
<snip some code from for loop>
> buffer = struct.pack('Lf', long(sp500_csv_date),
> float(sp500_csv_close))
> ====> sp_rand.seek(record_number * record_size)
> sp_rand.write(buffer)
>
> record_number = record_number + 1
>
> sp_rand.close()
HTH,
Brian vdB
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